A person is initially driving a car east down a straight road. the magnitude of the instantaneous acceleration is decreasing wit
2 answers:
Answer:
if acceleration of car decreasing then the velocity of car must increase but the rate of increase will be slower than initial rate
Explanation:
As we know that instantaneous acceleration is defined as the rate of change in velocity
so we will have
so acceleration gives us an idea about the rate by which velocity is increasing
now if the acceleration of a car is decreasing with time then it shows that the rate by which velocity of car is increasing with time is decreasing but still the car velocity is going up.
So we can say that if acceleration of car decreasing then the velocity of car must increase but the rate of increase will be slower than initial rate
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Answer:
82.1 km
Explanation:
We need to resolve each displacement along two perpendicular directions: the east-west direction (let's label it with x) and the north-south direction (y). Resolving each vector:
Vector B is 48 km south, so:
Finally, vector C:
Now we add the components along each direction:
So, the resultant (which is the distance in a straight line between the starting point and the final point of the motion) is
Answer:
The concentration of OH⁻ in the mixture is 0.05 M
Explanation:
The reaction of neutralization between HCl and NaOH is the following:
H⁺(aq) + OH⁻(aq) ⇄ H₂O(l)
The number of moles of HCl is:
Similarly, the number of moles of NaOH is:
Now, from the reaction of HCl and NaOH we have the following number of moles of NaOH remaining:
Finally, the concentration of OH⁻ in the mixture is:
Therefore, the concentration of OH⁻ in the mixture is 0.05 M.
I hope it helps you!